CVE Catalog

CVE-2002-1336

High
Published: Translated: NVD NIST

Summary

TightVNC before 1.2.6 generates the same challenge string for multiple connections, allowing remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.

Risk Assessment

Attackers can gain access to other users' VNC sessions, potentially leading to system takeover.

Recommendation

It is recommended to upgrade TightVNC to version 1.2.6 or later to mitigate this vulnerability.

Related vulnerabilities

Original NVD description (English source)

TightVNC before 1.2.6 generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS